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Notes Of Er Aditya Agarwal

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Different Bond Patterns Of Bricks

Different Bond Patterns Of Bricks Stretcher bond A pattern is made only using stretchers, with the joins on each course centred above and below by half a brick. This type of bonding is not particularly strong. A variation is the raking stretcher bond. The overlap between bricks is usually a third or a quarter of a brick, instead of half a brick. English bond This is a pattern formed by laying alternate courses of stretchers and headers. The joins between the stretchers are centred on the headers in the course below. This is one of the strongest bonds but requires more facing bricks than other bonds. English garden wall This is similar to the English bond but with one course of headers for every three courses of stretcher. The headers are centred on the headers in course below. This gives quick lateral spread of load and uses fewer facings than an English bond. English cross bond This alternates courses of stretchers and headers, with the alternating stretcher course being o...

Bangalore method vs Indore method of composting

B an galore method :- ✓ This is an an aerobic method conventionally carried out in pits. ✓ Initially, a layer of coarse municipal solid waste is placed at the bottom of a pit to a depth of 15 to 25cm and is made 7.5cm thicker for 25cm width towards both the edges of the pit. Night soil is put in the depressed portion to a thickness of 5cm and the elevated edges prevent it from draining to the side. ✓ A layer of solid waste is put on top so that the night soil layer is sandwiched between the two layers of municipal solid waste. Solid waste and night soil are put in alternate layers till it rises to a height of 30cm above the pit edge. ✓ The final layer of solid waste is at least 25 to 30cm thick. The top of the deposited material is rounded off to avoid rain water entering into the pit. ✓ After 4 to 6 months of decomposition the material is stabilized and is taken out and used as compost. Indore method ✓ The Indore method of composting in pits involves filling of alternate l...

Different types of bricks

Different types of bricks Different types of bricks are used in masonry construction based on material such as clay, concrete, lime, fly ash etc. Filed field identification of bricks for their properties, uses and suitability for different construction works are important. A brick is an important construction material which is generally available in rectangular shape manufactured from clay. They are very popular from olden days to modern days because of low cost and durability. Types of Bricks used in Masonry Construction Based on the manufacturing process, bricks are broadly classified into two types 1. Sun-Dried or unburnt bricks 2. Burnt bricks 1. Sun-Dried or Unburnt Clay Bricks Sun-dried or unburnt bricks are less durable and these are used for temporary structures. Unburnt bricks preparation involved in 3 steps they are preparation of clay, molding and drying. After molding, bricks are subjected to sunlight and dried using heat from sun. So, they are not th...

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